package com.sp.api.springbootapi.rabbitmq;

import com.rabbitmq.client.*;

import java.io.IOException;
import java.util.concurrent.TimeoutException;

/**
 * Created by weidewang on 2018/7/9
 */
public class Recv {
    //队列名称
    public static final String QUEUE_NAME = "hello";

    public static void main(String[] args) throws IOException, TimeoutException, InterruptedException {
        ConnectionFactory factory = new ConnectionFactory();
        factory.setHost("localhost");

        Connection connection = factory.newConnection();
        Channel channel = connection.createChannel();

        //声明队列，主要为了防止消息接收者先运行此程序，队列还不存在时创建队列。
        AMQP.Queue.DeclareOk declare = channel.queueDeclare(QUEUE_NAME, false, false, false, null);
        System.out.println("[*] Waiting for messages. To exit press CTRL+C");

        //创建队列消费者
        QueueingConsumer consumer = new QueueingConsumer(channel);
        //指定消费队列
        channel.basicConsume(QUEUE_NAME, true, consumer);

        while (true) {
            //nextDelivery是一个阻塞方法（内部实现其实是阻塞队列的take方法）
            QueueingConsumer.Delivery delivery = consumer.nextDelivery();
            String message = new String(delivery.getBody());
            System.out.println(" [x] Received '" + message + "'");
        }


    }
}
